Thought I quickly mention this. You might have noticed that every comment on this blog is associated with an avatar. Mine has a picture of me. Most others are now associated with auto-generated avatars. (Don’t blame me if you get a bad one. It’s AUTO-GENERATED! hehehe)
WordPress uses the Gravatar system. Other places also use Gravatar for showing users’ faces (or whatever they want to show.) I think it’s pretty neat. You sign up for an account. Upload a picture or two. Add email addresses that you use for leaving comments on blogs or forums. Associate each email address with a picture you uploaded. Done. After that your chosen avatar will show up anywhere that uses Gravatar as long as you use an email address that has a Gravatar setup.
Don’t you want to set one up?